STRUCTURAL BEHAVIOR OF THE SOUTH ROAD CURVED GIRDER BRIDGE

PRESENTED ARE THE MAJOR RESULTS OF A FIELD STUDY THAT INCLUDED THE FIELD TESTING OF A HORIZONTALLY CURVED, STEEL- GIRDER BRIDGE OF WELDED I-GIRDER AND CONCRETE SLAB CONSTRUCTION AND THE SUBSEQUENT ANALYSES MADE TO DETERMINE THE ANALYTICAL STRESSES AND DEFORMATIONS THAT WOULD MATCH THOSE PRODUCED BY THE CONSTRUCTION AND TEST VEHICLE STATIC LOADINGS. ANALYSES WERE MADE WITH THE APPROXIMATE AND CURVED GRID METHODS WITH VARIATIONS IN THE STIFFNESS PARAMETERS OF MOMENTS OF INERTIA AND TORSIONAL CONSTANTS. A COMPARISON WITH SLAB-LOAD EXPERIMENTAL DATA REVEALED THAT THE DEAD-LOAD FLEXURAL STRESSES AND VERTICAL DEFLECTIONS COULD BE PREDICTED BY BOTH METHODS. DEAD-LOAD RESPONSE WAS FOUND TO BE RELATIVELY INDEPENDENT BOTH OF THE TORISONAL CONSTANTS OF THE GIRDER MEMBERS AND OF THE TRANSVERSE STIFFNESS OF THE STRUCTURE (MOMENTS OF INERTIA OF DIAPHRAGMS AND SLAB). THE LIVE-LOAD TESTS WERE CONDUCTED WITH AN FHWA TEST VEHICLE THAT WAS DRIVEN ALONG 5 DIFFERENT LANES. THE APPROXIMATE METHOD COULD NOT PREDICT FLEXURAL STRESSES OR VERTICAL DEFLECTIONS, NOR COULD EITHER METHOD BE MADE TO GIVE LATERAL BENDING STRESSES. ROTATIONS COULD NOT BE PREDICTED BY THE GRID METHOD. OTHER EFFECTS INVESTIGATED WERE NONLINEAR STRESSES DUE TO WHEEL CONTACT AND WEB SLENDERNESS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 50-63
  • Monograph Title: Loading history of bridges
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209707
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 7 1972 12:00AM